Stone prism encased concrete-filled steel tube columns subjected to axial compression

Structures ◽  
2021 ◽  
Vol 33 ◽  
pp. 1853-1867
Author(s):  
Yong Ye ◽  
Yang Liu ◽  
Zi-Xiong Guo ◽  
Rachel Chicchi
Keyword(s):  
Axial Compression ◽  
Steel Tube ◽  
Concrete Filled Steel Tube

Shear response of steel fiber reinforced recycled concrete-filled steel tube columns

2021 ◽  
pp. 136943322110093
Author(s):  
Zhenzhen Liu ◽  
Yiyan Lu ◽  
Shan Li ◽  
Jiancong Liao
Keyword(s):  
Axial Compression ◽  
Steel Fiber ◽  
Steel Tube ◽  
Shear Capacity ◽  
Recycled Concrete ◽  
Recycled Aggregate ◽  
Superposition Method ◽  
Fiber Reinforced ◽  
Concrete Filled Steel Tube ◽  
Shear Span

A comprehensive study of the shear characteristics of steel fiber reinforced recycled concrete-filled steel tube (SRCFST) columns is conducted. 50 CFST stub columns are tested with the variables of steel tube diameter-thickness ratio ( D/t), shear span-to-depth ratio (λ), axial compression ratio ( n), and concrete mix. Two types of cements, three recycled aggregate percentages, three water-cement ratios, and three steel fiber contents are considered in design of concrete mixes. The experimental results show that SRCFST columns present the coincident shear behavior of the ordinary CFST columns. As λ is increased, shear resistance shows a downtrend, while the flexural strength presents an increasing trend. Imposing axial compression or thickening steel tube contributes to an adequate safety margin in plastic period. Based on the contributions superposition method, a predicted model of the shear capacity of SRCFST columns is proposed in consideration of shear-span ratio, axial compression, and self-stress.

Reliability analysis of concrete-filled steel tube columns under axial compression

2021 ◽  
Author(s):  
Tran-Trung Nguyen ◽  
Phu-Cuong Nguyen ◽  
Viet Trinh Tran ◽  
Duc-Duy Pham ◽  
Lahouari Benabou
Keyword(s):  
Reliability Analysis ◽  
Axial Compression ◽  
Steel Tube ◽  
Concrete Filled Steel Tube

Experimental Study on Expansive Concrete Filled Steel Tube

2013 ◽  
Vol 275-277 ◽  
pp. 2077-2083
Author(s):  
Kai Cheng Huo ◽  
Xian Cheng Shu ◽  
Huan Huan Yue
Keyword(s):  
Experimental Study ◽  
Temperature Change ◽  
Axial Compression ◽  
High Strength ◽  
Steel Tube ◽  
Concrete Filled Steel Tube ◽  
Vertical Loading ◽  
Expansive Concrete ◽  
Hardening Process ◽  
Mix Proportion

Measure the temperature change of concrete-filled steel tubular with high strength low heat micro-expansive in its hardening process with different mix proportion. Study self-stress of high strength low-heat micro-expansive and study the relations of the expansive admixtures quantity and its changing regularity with the time. Observe the fail of axial compression short column of concrete-filled steel tubular with high strength expansive under vertical loading, study the changing regularity of its stress under loading.

A unified formulation for hollow and solid concrete-filled steel tube columns under axial compression

2010 ◽  
Vol 32 (4) ◽  
pp. 1046-1053 ◽  
Author(s):  
Min Yu ◽  
Xiaoxiong Zha ◽  
Jianqiao Ye ◽  
Chunyan She
Keyword(s):  
Axial Compression ◽  
Steel Tube ◽  
Concrete Filled Steel Tube

Effect of Axial Compression Ratio and Concrete Strength on Seismic Performance of Concrete Filled Steel Tube Beam-Column Joints

2014 ◽  
Vol 488-489 ◽  
pp. 704-707
Author(s):  
Ying Wang ◽  
Miao Li ◽  
Jin Hua Xu ◽  
He Fan
Keyword(s):  
Axial Compression ◽  
Seismic Performance ◽  
Compression Ratio ◽  
Concrete Strength ◽  
Steel Tube ◽  
Hysteresis Curve ◽  
Element Analysis ◽  
Concrete Filled Steel Tube ◽  
Axial Compression Ratio ◽  
Strength And Stiffness

Based on finite element analysis o f concrete filled steel tube beam-column joints under the single axial compression ratio and concrete strength, further research was done to analyze the seismic performance of concrete filled steel tube beam-column joints under different axial compression ratio and concrete strength. Beam-column joint which is connected by bolts with welding extended steel sheets at the beam root was analyzed. The results show that with the increase of axial compression ratio, strength and stiffness degradation of the joint accelerated gradually. Axial compression ratio at 0.3, 0.4 are appropriate values for joints specimen, load-displacement hysteresis curve of joint specimens is relatively plump and shows good seismic performance. Chance of concrete strength also had effect on seismic performance of joint specimen, but in contrast it is not so obviously.

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